# US 10,297,698 B2 · Articles, coating compositions, and methods

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,297,698 B2
- Document ID: US10297698B2
- Status: Granted
- Kind: B2
- Application number: 15/933,412
- Filed: 2018-03-23
- Published: 2018-07-26
- Granted: 2019-05-21
- Earliest claimed: 2010-05-11
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: Yiwen Chu; Zhigang Yu; Naiyong Jing; Rui Pan
- Web page: https://patentgrep.com/patent/US10297698B2

## CPC

- H10F 77/315: {the coatings being antireflective or having enhancing optical properties}
- C03C 17/007: {containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase}
- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D 7/61: inorganic
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 7/70: {characterised by shape, e.g. fibres, flakes or microspheres}
- C03C 2217/425: consisting of a porous layer
- C03C 2217/465: having a specific shape
- C03C 2217/478: Silica
- C08K 3/36: Silica
- C08K 9/06: with silicon-containing compounds
- Y02E 10/50: Photovoltaic [PV] energy
- Y10T 428/315: Surface modified glass [e.g., tempered, strengthened, etc.]
- Y10T 428/31525: Next to glass or quartz
- Y10T 428/31645: Next to addition polymer from unsaturated monomers
- Y10T 428/31667: Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

There is provided a coating composition comprising nonspherical nanoparticles; spherical nanoparticles; optionally hydrophilic groups and optional an surfactant; and a liquid medium comprising water and no greater than 30 wt % organic solvent, if present, based on the total weight of liquid medium, where at least a portion of the nonspherical nanoparticles or at least a portion of the spherical nanoparticles comprises functional groups attached to their surface through chemical bonds, wherein the functional groups comprise at least one group selected from the group consisting of epoxy group, amine group, hydroxyl, olefin, alkyne, (meth) acrylato, mercapto group, or combinations thereof. There is also provided a method for modifying a substrate surface using the coating composition and articles made therefrom.

## Claims

### Claim 1

A coated solar panel comprising a solar panel and a tempered coating on the solar panel, wherein the coating comprises:
nonspherical nanoparticles;
spherical nanoparticles;
optionally hydrophilic groups and optionally a surfactant; and
wherein at least a portion of the nonspherical nanoparticles or at least a portion of the spherical nanoparticles comprises functional groups attached to their surface through chemical bonds, wherein at least one of the functional groups is the reaction product of the reaction of a spherical nanoparticle with a functional compound selected from the group consisting of
and combinations thereof,
wherein: n is an integer from 0 to 10;
X is CH2, O, S, or NHC(O)R; and
R is —CH3, —C2H5, —C3H7, and —C4H9;
wherein the coating has a score of 1H or greater in the pencil hardness test.

### Claim 2 (depends on 1)

The coated solar panel of claim 1, wherein all the nonspherical nanoparticles or all the spherical nanoparticles comprise the functional groups.

### Claim 3 (depends on 1)

The coated solar panel of claim 1, wherein the weight ratio of the nonspherical nanoparticles to the spherical nanoparticles ranges from 95:5 to 5:95.

### Claim 4 (depends on 3)

The composition of claim 3, wherein the weight ratio of the nonspherical nanoparticles to the spherical nanoparticles ranges from 70:30 to 30:70.

### Claim 5 (depends on 1)

The coated solar panel of claim 1, wherein at least a portion of the nonspherical nanoparticles comprise silica nanoparticles.

### Claim 6 (depends on 1)

The coated solar panel of claim 1, wherein at least a portion of the spherical nanoparticles comprise silica nanoparticles.

### Claim 7 (depends on 1)

The coated solar panel of claim 1, wherein the coating composition can be applied to a glass or ceramic substrate.

### Claim 8 (depends on 1)

The coated solar panel of claim 1, wherein the nonspherical nanoparticles have an average particle size between 1 and 200 nm and an aspect ratio between 2 and 100.

### Claim 9 (depends on 1)

The coated solar panel of claim 1, wherein the spherical nanoparticles have an average particle size between 1 and 120 nm.

### Claim 10 (depends on 1)

The coated solar panel of claim 1, wherein the coating composition comprises at least 0.05 wt % nonspherical nanoparticles and no greater than 40 wt % nonspherical nanoparticles, based on the total weight of the coating composition.

### Claim 11 (depends on 1)

The coated solar panel of claim 1, wherein the coating composition comprises at least 0.05 wt % spherical nanoparticles and no greater than 40 wt % spherical nanoparticles, based on the total weight of the coating composition.

### Claim 12 (depends on 1)

The coated solar panel of claim 1, wherein the coating composition comprises 0.01-5 wt % surfactant, based on the total weight of the coating composition.

### Claim 13 (depends on 1)

The coated solar panel of claim 1, wherein a dried coating provides antireflective, easy cleaning and/or durability characteristics to a substrate for at least 24 hours.

### Claim 14 (depends on 1)

The coated solar panel of claim 1, wherein the nonspherical nanoparticles are elongated nanoparticles.

### Claim 15 (depends on 1)

The coated solar panel of claim 1, wherein the spherical nanoparticles comprise the functional groups.